Single FI Sp4 D1 slot ported in a sedan - Car Audio Classifieds!
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  #1  
Old 06-22-2013, 02:50 PM
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Default Please confirm this is a GREAT Single FI Sp4 D1 slot ported box for sedan


Last edited by Artrilliance; 06-22-2013 at 02:58 PM. Reason: Title change to clarify post
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Old 06-22-2013, 02:54 PM
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3.5" slot port would be tuned to 28.39 hz
4" slot port would be tuned to 30.65 hz

Everything else looks good?
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Old 06-22-2013, 06:06 PM
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If I'm reading your drawing right, the port would be 14.25 x 4?

If so that is only 57 sqin of port. Way small.
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Old 06-22-2013, 06:37 PM
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I have already tried adjusting port length and it starts eating up net box volume and takes a great deal more length for minor adjustments in tuning. I'm pushing to go for the larger box, smaller 4.5" port of around 14" cu in per foot, and keeping the tuning lower. Will this be a good compromise? My trunk space is maxed out and I feel from the WinISD graph that the larger box will have a smoother curve as well as gain closer to 3DB. How is it looking?
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Old 06-23-2013, 02:00 AM
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Bump?
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Old 06-23-2013, 02:10 AM
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external aeroports work great in trunks
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Old 06-23-2013, 02:22 AM
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I had Sp4 in a 4.5 net cube single 8" sonotube, 30hz on 3.5k watts in a trunk and it was ridiculous on lows
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Old 06-23-2013, 08:37 AM
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total fail of a box for a sp4
take our advice and get more port area
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